Home / 405,318.09-559,340.73-221,560.41

Finding the Fourth Proportional to 405,318.09, 559,340.73 and 221,560.41

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Solution

The fourth proportional to 405,318.09, 559,340.73 and 221,560.41 is: 305,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,318.09 : 559,340.73 = 221,560.41 : x
  2. Step 2: Convert to fraction form
    405,318.09/559,340.73 = 221,560.41/x
  3. Step 3: Cross multiply
    405,318.09x = 559,340.73 × 221,560.41
  4. Step 4: Simplify right side
    405,318.09x = 123,927,761,468.50
  5. Step 5: Solve for x
    x = 123,927,761,468.50/405,318.09
  6. Step 6: Final answer
    x = 305,754.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.